"Contemplating is receiving." (St. John of the Cross) What we receive in prayer is the Spirit, who makes all creation new, moment by moment. It is the Spirit who rebirths us within the caves of our hearts. The case is a metaphor for this silent withdrawal, this going away to be alone, to listen, to gestate the Spirit, to rebirth ourselves. The reborn self is the child of wisdom born in solitude.
"You don't need a big sister," Lulu said, "you need a friend. I'd much rather be that."
"Okay," Emily muttered shyly. "Only I don't know why. I'm just a kid."
"You know things most adults don't even think of. You care about the same things I do. That's a lot of what a friend really is. And you're strong. I've needed that. And you share your world, and you don't judge it. Those are very grown-up things; and Emily, I can't name one of my so-called friends who have them all."